Add mockapi source files and tests

src/mockapi/core/spec_loader.py

@@ -18,12 +18,7 @@ class SpecLoader:
     SUPPORTED_EXTENSIONS = {".yaml", ".yml", ".json"}
 
     def __init__(self, spec_path: str, fmt: Optional[str] = None):
-        """Initialize the spec loader.
-
-        Args:
-            spec_path: Path to the OpenAPI spec file
-            fmt: Force format (yaml or json), auto-detected if None
-        """
+        """Initialize the spec loader."""
         self.spec_path = Path(spec_path)
         self.fmt = fmt or self._detect_format()
 
@@ -46,14 +41,7 @@ class SpecLoader:
         return "yaml"
 
     def load(self) -> Dict[str, Any]:
-        """Load and parse the OpenAPI specification.
-
-        Returns:
-            Dictionary containing the parsed spec
-
-        Raises:
-            SpecLoaderError: If loading or parsing fails
-        """
+        """Load and parse the OpenAPI specification."""
         try:
             with open(self.spec_path, "r", encoding="utf-8") as f:
                 if self.fmt == "yaml":